Fast, reliable aviation weather — in JSON

Aviation Weather API

Name: CheckWX Aviation Weather API
Rating: 4.9 (87 reviews)
Author: CheckWX

Get METARs, TAFs, and Airports in a consistent, developer-friendly format — no XML, no parsing headaches.
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METAR

TAF

No XML

Skip complex parsing — get clean, consistent JSON responses in milliseconds.

Fully Decoded

Human-readable weather data with decoded remarks and metadata.

Production Ready

Fast, reliable API built for real-world aviation applications.

METAR

Fully decoded METAR reports with unit conversions and rich metadata, including human-readable decoded remarks!

Available Endpoints

Get by ICAO
Nearest to ICAO
Within radius of ICAO
Nearest to latitude / longitude
Within radius of latitude / longitude
Get by Country
Get by State
Previous Report History

From Raw METAR

METAR EGLL 112350Z AUTO 26016KT 9999 -RA BKN014 16/14 Q1017

To Decoded JSON

{
  "results": 1,
  "data": [
    {
      "icao": "EGLL",
      "raw_text": "METAR EGLL 112350Z AUTO 26016KT 9999 -RA BKN014 16/14 Q1017",
      "observed": "2026-06-11T23:50:00Z",
      "report": {
        "type": "METAR",
        "flags": "AUTO",
        "status": "Routine Report, Automatic Report"
      },
      "conditions": [
        {
          "code": "-RA",
          "text": "Light Rain"
        }
      ],
      "clouds": [
        {
          "code": "BKN",
          "feet": 1400,
          "meters": 427.0,
          "text": "Broken"
        }
      ],
      "ceiling": {
        "code": "BKN",
        "feet": 1400,
        "meters": 427.0,
        "text": "Broken"
      },
      "dewpoint": {
        "celsius": 14,
        "fahrenheit": 57
      },
      "flight_category": "MVFR",
      "temperature": {
        "celsius": 16,
        "fahrenheit": 61
      },
      "humidity": 87,
      "station": {
        "icao": "EGLL",
        "iata": "LHR",
        "name": "London Heathrow Airport",
        "geometry": {
          "type": "Point",
          "coordinates": [
            -0.45991,
            51.47075
          ]
        },
        "city": "London",
        "location": "London, United Kingdom"
      },
      "pressure": {
        "hg": 30.03,
        "mb": 1017.0
      },
      "visibility": {
        "miles": 10.0,
        "meters": 9999.0,
        "text": "Greater than 10,000 meters"
      },
      "wind": {
        "degrees": 260,
        "speed": {
          "kts": 16,
          "mph": 18,
          "kph": 30,
          "mps": 8
        },
        "direction": "W"
      }
    }
  ]
}

TAF

Fully decoded TAF reports with unit conversions, forecast sections, and rich meta-data.

Available Endpoints

Get by ICAO
Nearest to ICAO
Within radius of ICAO
Nearest to latitude / longitude
Within radius of latitude / longitude
Get by Country
Get by State
Previous Report History

From Raw TAF

TAF EGLL 112253Z 1200/1306 26010KT 9999 BKN012 TEMPO 1200/1207 BKN008 PROB30 TEMPO 1200/1207 7000 -DZ BECMG 1208/1211 27015G25KT BKN020 BECMG 1218/1221 25010KT PROB30 TEMPO 1222/1303 BKN014

To Decoded JSON

{
  "results": 1,
  "data": [
    {
      "icao": "EGLL",
      "raw_text": "TAF EGLL 112253Z 1200/1306 26010KT 9999 BKN012 TEMPO 1200/1207 BKN008 PROB30 TEMPO 1200/1207 7000 -DZ BECMG 1208/1211 27015G25KT BKN020 BECMG 1218/1221 25010KT PROB30 TEMPO 1222/1303 BKN014",
      "issued": "2026-06-11T22:53:00Z",
      "period": {
        "from": "2026-06-12T00:00:00Z",
        "to": "2026-06-13T06:00:00Z"
      },
      "report": {
        "type": "TAF",
        "status": "Forecast Report"
      },
      "station": {
        "icao": "EGLL",
        "iata": "LHR",
        "name": "London Heathrow Airport",
        "geometry": {
          "type": "Point",
          "coordinates": [
            -0.45991,
            51.47075
          ]
        },
        "city": "London",
        "location": "London, United Kingdom"
      },
      "forecast": [
        {
          "section": "1200/1306 26010KT 9999 BKN012",
          "change": {
            "code": "INITIAL",
            "period": {
              "from": "2026-06-12T00:00:00Z",
              "to": "2026-06-13T06:00:00Z"
            },
            "text": "Initial or prevailing forecast"
          },
          "clouds": [
            {
              "code": "BKN",
              "feet": 1200,
              "meters": 366.0,
              "text": "Broken"
            }
          ],
          "wind": {
            "degrees": 260,
            "speed": {
              "kts": 10,
              "mph": 12,
              "kph": 19,
              "mps": 5
            },
            "direction": "W"
          },
          "visibility": {
            "miles": 10.0,
            "meters": 9999.0,
            "text": "Greater than 10,000 meters"
          }
        },
        {
          "section": "TEMPO 1200/1207 BKN008",
          "change": {
            "code": "TEMPO",
            "period": {
              "from": "2026-06-12T00:00:00Z",
              "to": "2026-06-12T07:00:00Z"
            },
            "text": "Temporary changes"
          },
          "clouds": [
            {
              "code": "BKN",
              "feet": 800,
              "meters": 244.0,
              "text": "Broken"
            }
          ]
        },
        {
          "section": "PROB30 TEMPO 1200/1207 7000 -DZ",
          "change": {
            "code": "TEMPO",
            "period": {
              "from": "2026-06-12T00:00:00Z",
              "to": "2026-06-12T07:00:00Z"
            },
            "probability": 30,
            "text": "Temporary changes"
          },
          "conditions": [
            {
              "code": "-DZ",
              "text": "Light Drizzle"
            }
          ],
          "visibility": {
            "miles": 4.35,
            "meters": 7000.0,
            "text": "7,000 meters"
          }
        },
        {
          "section": "BECMG 1208/1211 27015G25KT BKN020",
          "change": {
            "code": "BECMG",
            "period": {
              "from": "2026-06-12T08:00:00Z",
              "to": "2026-06-12T11:00:00Z"
            },
            "text": "Gradual lasting changes"
          },
          "clouds": [
            {
              "code": "BKN",
              "feet": 2000,
              "meters": 610.0,
              "text": "Broken"
            }
          ],
          "wind": {
            "degrees": 270,
            "speed": {
              "kts": 15,
              "mph": 17,
              "kph": 28,
              "mps": 8
            },
            "gust": {
              "kts": 25,
              "mph": 29,
              "kph": 46,
              "mps": 13
            },
            "direction": "W"
          }
        },
        {
          "section": "BECMG 1218/1221 25010KT",
          "change": {
            "code": "BECMG",
            "period": {
              "from": "2026-06-12T18:00:00Z",
              "to": "2026-06-12T21:00:00Z"
            },
            "text": "Gradual lasting changes"
          },
          "wind": {
            "degrees": 250,
            "speed": {
              "kts": 10,
              "mph": 12,
              "kph": 19,
              "mps": 5
            },
            "direction": "WSW"
          }
        },
        {
          "section": "PROB30 TEMPO 1222/1303 BKN014",
          "change": {
            "code": "TEMPO",
            "period": {
              "from": "2026-06-12T22:00:00Z",
              "to": "2026-06-13T03:00:00Z"
            },
            "probability": 30,
            "text": "Temporary changes"
          },
          "clouds": [
            {
              "code": "BKN",
              "feet": 1400,
              "meters": 427.0,
              "text": "Broken"
            }
          ]
        }
      ]
    }
  ]
}

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Documentation

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Aviation Weather API

Try It Live

No XML

Fully Decoded

Production Ready

METAR

Available Endpoints

TAF

Available Endpoints

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